13918223912 has 8 divisors (see below), whose sum is σ = 26096669850. Its totient is φ = 6959111952.

The previous prime is 13918223911. The next prime is 13918223927. The reversal of 13918223912 is 21932281931.

It can be written as a sum of positive squares in only one way, i.e., 7657300036 + 6260923876 = 87506^2 + 79126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 13918223912.

It is not an unprimeable number, because it can be changed into a prime (13918223911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 869888987 + ... + 869889002.

Almost surely, 2^13918223912 is an apocalyptic number.

It is an amenable number.

13918223912 is a deficient number, since it is larger than the sum of its proper divisors (12178445938).

13918223912 is a wasteful number, since it uses less digits than its factorization.

13918223912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739777995 (or 1739777991 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The spelling of 13918223912 in words is "thirteen billion, nine hundred eighteen million, two hundred twenty-three thousand, nine hundred twelve".